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| All Patents in class 279/38 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 83,261 | Oct. 20, 1868 | B. Darling | Bit-stock | |
 | 87,940 | Mar. 16, 1869 | W.A. Ives | Improvement in braces for bits | |
 | 102,753 | May 10, 1870 | J.S. Birch | Improvement in Adjustable Watch-Keys | |
 | 203,581 | May 14, 1878 | J.S. Birch | Wrench | |
 | 282,605 | Aug. 07, 1883 | J.S. Birch | Watch Key and Holding Tool | |
 | 289,502 | Dec. 04, 1883 | E. Buell | Bit-stock | |